Finding the Fourth Proportional to 13,608.01, 20,403.60 and 8,922.34

Step by Step Solution

1. Step 1: Write the proportion equation
   13,608.01 : 20,403.60 = 8,922.34 : x
2. Step 2: Convert to fraction form
   13,608.01/20,403.60 = 8,922.34/x
3. Step 3: Cross multiply
   13,608.01x = 20,403.60 × 8,922.34
4. Step 4: Simplify right side
   13,608.01x = 182,047,856.42
5. Step 5: Solve for x
   x = 182,047,856.42/13,608.01
6. Step 6: Final answer
   x = 13,377.99